Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2020-06-22 — TX
Operator
Exxonmobil Pipeline Co
Cause
Equipment Failure
Commodity
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$32,350
Incident datetime
2020-06-22 05:43
Report number
Location
TX
Narrative
On june 22, 2020, valve-1699 had a failure of a temporary engineered enclosure installed to contain product from a deteriorating o-ring on the valve bonnet. An estimated 33 barrels were released into the atmosphere and the vapor cloud was contained in the vicinity of the valve. A fire monitor was set up by exxonmobil baton rouge refinery and a water spray turned on to suppress the vapors. Air monitoring began immediately and perimeter air monitoring was set up near the roadway to ensure no vocs or lels were leaving the site. Flares were set up on each end of the pipeline at the isolation valves to empty the pipeline in order to safely replace the valve. Product continued to be released from the failed temporary valve until flare down was complete on june 26, 2020. The valve was replaced in like-kind. This temporary engineered enclosure was the only one in empco's system. However, as a follow up from the investigation, empco's repair and modification manual will be updated to include fugitive emissions monitoring if this temporary engineered enclosure is utilized in the future to maintain a valve until system can be safely depressurized/gas freed and permanently repaired.
Detailed record list
Report Received Date
2020-07-22 00:00:00
Iyear
2020
Report Number
20200213
Supplemental Number
34598
Report Type
Supplemental Final
Operator Id
4906
Name
Exxonmobil Pipeline Co
Operator Street Address
22777 Springwoods Village Parkway E2.2b-Emp
Operator City Name
Spring
Operator State Abbreviation
TX
Operator Postal Code
77389
Local Datetime
2020-06-22 05:43:00
Location Latitude
30.475309
Location Longitude
-91.220828
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Other Hvl
Commodity Details
Chemical Grade Propylene
Unintentional Release Bbls
33
Intentional Release Bbls
5117
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2020-06-22 05:43:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2020-06-22 05:43:00
Restart Datetime
2020-06-28 15:00:00
On Site Datetime
2020-06-22 05:43:00
Nrc Rpt Datetime
2020-06-22 07:01:00
Nrc Rpt Num
1280096
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
West Bank Meter-Bayou Sorrell La-109
Segment Name
5745
Onshore State Abbreviation
La
Onshore Postal Code
70767
Onshore City Name
Port Allen
Onshore County Name
West Baton Rouge Parish
Designated Location
Milepost/valve Station
Designated Name
Vlv-1699
Federal
No
Location Type
Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Valve
Valve Type
Mainline
Valve Mainline Type
Gate
Valve Manufacturer
Grove
Installation Year
1972
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Seal Or Packing
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
205959
Est Cost Prop Damage
32350
Est Cost Emergency
135000
Est Cost Environmental
0
Est Cost Other
117090
Est Cost Other Details
Rental Flare
Prpty
490399
Accident Psig
1221
Mop Psig
2160
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
79319
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Cpm In Place Ind
No
Investigation Status
No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate)
Investigation Status Details
No control issues identified.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Non-Threaded Connection Failure
Eq Failure Type
Non-Threaded Connection Failure
Other Non Threaded Ind
Seal (Not Pump Seal) Or Packing
Additional Valve Ind
Yes
Preparer Name
T**** S******
Preparer Title
Pipeline Safety Advisor
Preparer Email
T**************@e*********.com
Preparer Telephone
281-939-4602
Prepared Date
2020-12-08 00:00:00
Authorizer Name
C******* B H********
Authorizer Telephone
832-624-7920
Authorizer Title
Sshe Manager
Authorizer Email
C*******************@e*********.com
Narrative
On june 22, 2020, valve-1699 had a failure of a temporary engineered enclosure installed to contain product from a deteriorating o-ring on the valve bonnet. An estimated 33 barrels were released into the atmosphere and the vapor cloud was contained in the vicinity of the valve. A fire monitor was set up by exxonmobil baton rouge refinery and a water spray turned on to suppress the vapors. Air monitoring began immediately and perimeter air monitoring was set up near the roadway to ensure no vocs or lels were leaving the site. Flares were set up on each end of the pipeline at the isolation valves to empty the pipeline in order to safely replace the valve. Product continued to be released from the failed temporary valve until flare down was complete on june 26, 2020. The valve was replaced in like-kind. This temporary engineered enclosure was the only one in empco's system. However, as a follow up from the investigation, empco's repair and modification manual will be updated to include fugitive emissions monitoring if this temporary engineered enclosure is utilized in the future to maintain a valve until system can be safely depressurized/gas freed and permanently repaired.
| Report Received Date | 2020-07-22 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200213 |
| Supplemental Number | 34598 |
| Report Type | Supplemental Final |
| Operator Id | 4906 PHMSA Enforcement |
| Name | Exxonmobil Pipeline Co |
| Operator Street Address | 22777 Springwoods Village Parkway E2.2b-Emp |
| Operator City Name | Spring |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77389 |
| Local Datetime | 2020-06-22 05:43:00 |
| Location Latitude | 30.475309 Google Maps OpenStreetMap |
| Location Longitude | -91.220828 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Other Hvl |
| Commodity Details | Chemical Grade Propylene |
| Unintentional Release Bbls | 33 |
| Intentional Release Bbls | 5117 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2020-06-22 05:43:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2020-06-22 05:43:00 |
| Restart Datetime | 2020-06-28 15:00:00 |
| On Site Datetime | 2020-06-22 05:43:00 |
| Nrc Rpt Datetime | 2020-06-22 07:01:00 |
| Nrc Rpt Num | 1280096 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | West Bank Meter-Bayou Sorrell La-109 |
| Segment Name | 5745 |
| Onshore State Abbreviation | La |
| Onshore Postal Code | 70767 |
| Onshore City Name | Port Allen |
| Onshore County Name | West Baton Rouge Parish |
| Designated Location | Milepost/valve Station |
| Designated Name | Vlv-1699 |
| Federal | No |
| Location Type | Originated On Operator-Controlled Property, But Then Flowed Or Migrated Off The Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Valve |
| Valve Type | Mainline |
| Valve Mainline Type | Gate |
| Valve Manufacturer | Grove |
| Installation Year | 1972 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 205959 |
| Est Cost Prop Damage | 32350 |
| Est Cost Emergency | 135000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 117090 |
| Est Cost Other Details | Rental Flare |
| Prpty | 490399 |
| Accident Psig | 1221 |
| Mop Psig | 2160 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 79319 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Cpm In Place Ind | No |
| Investigation Status | No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate) |
| Investigation Status Details | No control issues identified. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Non-Threaded Connection Failure |
| Eq Failure Type | Non-Threaded Connection Failure |
| Other Non Threaded Ind | Seal (Not Pump Seal) Or Packing |
| Additional Valve Ind | Yes |
| Preparer Name | T**** S****** |
| Preparer Title | Pipeline Safety Advisor |
| Preparer Email | T**************@e*********.com |
| Preparer Telephone | 281-939-4602 |
| Prepared Date | 2020-12-08 00:00:00 |
| Authorizer Name | C******* B H******** |
| Authorizer Telephone | 832-624-7920 |
| Authorizer Title | Sshe Manager |
| Authorizer Email | C*******************@e*********.com |
| Narrative | On june 22, 2020, valve-1699 had a failure of a temporary engineered enclosure installed to contain product from a deteriorating o-ring on the valve bonnet. An estimated 33 barrels were released into the atmosphere and the vapor cloud was contained in the vicinity of the valve. A fire monitor was set up by exxonmobil baton rouge refinery and a water spray turned on to suppress the vapors. Air monitoring began immediately and perimeter air monitoring was set up near the roadway to ensure no vocs or lels were leaving the site. Flares were set up on each end of the pipeline at the isolation valves to empty the pipeline in order to safely replace the valve. Product continued to be released from the failed temporary valve until flare down was complete on june 26, 2020. The valve was replaced in like-kind. This temporary engineered enclosure was the only one in empco's system. However, as a follow up from the investigation, empco's repair and modification manual will be updated to include fugitive emissions monitoring if this temporary engineered enclosure is utilized in the future to maintain a valve until system can be safely depressurized/gas freed and permanently repaired. |
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